A Parallel Plate Capacitor of Capacitance C₀ Has Plates of Area

Multiple Choice

A parallel plate capacitor of capacitance C₀ has plates of area A with separation d between them.When it is connected to a battery of voltage V₀,it has charge of magnitude Q₀ on its plates.It is then disconnected from the battery and the space between the plates is filled with a material of dielectric constant 3.After the dielectric is added,the magnitudes of the capacitance and the potential difference between the plates are

A) $$\frac { 1 } { 3 }$$ C₀, $$\frac { 1 } { 3 }$$ V₀.
B) C₀, $\frac { 1 } { 3 }$ V₀.
C) C₀,V₀.
D) 3C₀, $\frac { 1 } { 3 }$ V₀.
E) 3C₀,3V₀.